Invention Grant
- Patent Title: Heat assisted magnetic recording head employing noble metal alloy as diffusion barrier layer
- Patent Title (中): 采用贵金属合金作为扩散阻挡层的热辅助磁记录头
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Application No.: US14133003Application Date: 2013-12-18
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Publication No.: US09099111B2Publication Date: 2015-08-04
- Inventor: Hamid Balamane , Vijay Prakash Singh Rawat , Matteo Staffaroni , Barry C. Stipe
- Applicant: HGST Netherlands B.V.
- Applicant Address: NL Amsterdam
- Assignee: HGST NETHERLANDS B.V.
- Current Assignee: HGST NETHERLANDS B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Patterson & Sheridan, LLP
- Main IPC: G11B5/31
- IPC: G11B5/31 ; G11B5/00
Abstract:
The present invention generally relates to a HAMR head. An insulating layer isolates the NFT from the magnetic lip of the magnetic pole. A noble metal alloy diffusion barrier layer is present between the insulating layer and the magnetic lip to prevent diffusion from the insulating layer into the magnetic lip. The noble metal alloy has a melting point of greater than about 1065 degrees Celsius, and the noble metals may be selected from Au, Pt, Ir, Re and Ru. The alloying elements comprise less than 10 percent of the alloy. The alloying elements can include Rh, W, Mo, Ni, Pt, Co, B, Ru and combinations thereof. The diffusion barrier layer may surround the magnetic lip, may surround the insulating layer, or may simply be at the interface of the insulating layer and the magnetic lip.
Public/Granted literature
- US20150170683A1 HEAT ASSISTED MAGNETIC RECORDING HEAD EMPLOYING NOBLE METAL ALLOY AS DIFFUSION BARRIER LAYER Public/Granted day:2015-06-18
Information query
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